Reservation System Expansion

I need to expand on the publicly available phpmyreservation software. What i need to do is make a different reservation table for 5 different groups (let's say schools in this case). So each school will have their own reservation system like the one i am attaching in the zip file. Each school will access their reservation through their own URL: [login to view URL] [login to view URL] [login to view URL] [login to view URL] etc... The code for the reservation system is already working through [login to view URL] and i will attach the code. I want the main page to have a list of the schools available to reserve, and once they choose a school it will take them to that schools' url, ex: [login to view URL] Each school should have the option to reserve 10 different rooms. So if i want to reserve ugh room 1 I would click uga on the main page, sign up with the specified secret code, and click room 1, then choose my reservation slot. After you check out [login to view URL] and the sample code you should have a better grasp of what i'm trying to do. I can provide more clarification if you need it.